Taric Update Idea New Ult

So I was playing a taric game today and had an idea for an ult rework that I thought might improve the him both gameplay wise and thematically. I always sort of saw Taric as this sort of aura provider who used his gems to reflect all these buffs and heals on him and his allies and thus came up with this:

 **Gem Infuse**
         Taric infuses target ally or enemy with gem magic causing them to reflect all effects on them for a short period
         **On Ally Cast** - the target reflects all positive effects sharing with nearby allies a percentage of all heals and buffs castes on the for the duration.
         **On Enemy Cast** - the target reflects all negative effects causing other enemies around them to take a percentage of all damage and debuffing effects that they receive over the duration.

This would let Taric use his single target heal and stun more creatively and would allow for some cool synergy between him and other buffs/CC. What do you guys think OP/UP, to gimmicky?